Voltage controller

Abstract

A method for protecting an electrical device includes monitoring a line voltage to detect a high voltage condition such that the voltage is above a predetermined voltage range, and monitoring the line voltage to detect a low voltage condition such that the voltage is below the predetermined range. The method also includes electrically isolating the electrical device such that the electrical device does not receive electricity when at least one of a high voltage condition and a low voltage condition is detected.

1 . A method for protecting an electrical device, said method comprising the steps of: 
 monitoring a line voltage to detect a high voltage condition such that the voltage is above a predetermined voltage range;    monitoring the line voltage to detect a low voltage condition such that the voltage is below the predetermined range; and    electrically isolating the electrical device such that the electrical device does not receive electricity when at least one of a high voltage condition and a low voltage condition is detected.    
     
     
         2 . A method according to  claim 1  further comprising the step of monitoring the line voltage after electrically isolating the electrical device.  
     
     
         3 . A method according to  claim 2  further comprising the step of restoring power to the electrical device when the line voltage is within the predetermined voltage range.  
     
     
         4 . A method according to  claim 1  further comprising the step of providing a visual indication that the line voltage is being monitored.  
     
     
         5 . A method according to  claim 1  further comprising the step of providing a visual indication that a low voltage condition is detected.  
     
     
         6 . A method according to  claim 1  further comprising the steps of: 
 providing a visual indication when a low voltage condition is detected; and  
 providing a visual indication when a high voltage condition is detected.  
 
     
     
         7 . A method according to  claim 3  further comprising the step of providing a visual indication when a low voltage condition is detected.  
     
     
         8 . A method according to  claim 3  further comprising the steps of: 
 providing a visual indication when a low voltage condition is detected; and  
 providing a visual indication when a high voltage condition is detected.  
 
     
     
         9 . A method according to  claim 1  wherein said step of monitoring the line voltage comprises the step of providing a visual indication when the line voltage is being tested.  
     
     
         10 . A circuit for protecting an electrical device, said circuit configured to: 
 monitor a line voltage to detect a voltage above a predetermined voltage range;    monitor the line voltage to detect a voltage below the predetermined range; and    electrically isolate the electrical device such that the electrical device does not receive electricity when at least one of a voltage above the predetermined voltage range and a voltage below the predetermined range is detected.    
     
     
         11 . A circuit according to  claim 10  further configured to monitor the line voltage after electrically isolating the electrical device.  
     
     
         12 . A circuit according to  claim 11  further configured to restore power to the electrical device when the line voltage is within the predetermined voltage range.  
     
     
         13 . A circuit according to  claim 10  further configured to provide a visual indication of the monitoring of the line voltage.  
     
     
         14 . A circuit according to  claim 10  further configured to provide a visual indication when a voltage below the predetermined voltage range is detected.  
     
     
         15 . A circuit according to  claim 10  further configured to: 
 provide a visual indication when a voltage below the predetermined voltage range is detected; and  
 provide a visual indication when a voltage above the predetermined voltage range is detected.  
 
     
     
         16 . A circuit according to  claim 12  further configured to provide a visual indication when a voltage below the predetermined voltage range is detected.  
     
     
         17 . A circuit according to  claim 12  further configured to: 
 provide a visual indication when a voltage below the predetermined voltage range is detected; and  
 provide a visual indication when a voltage above the predetermined voltage range is detected.  
 
     
     
         18 . A circuit according to  claim 10  further configured to provide a visual indication when the line voltage is being tested.  
     
     
         19 . A circuit according to  claim 17  further configured to provide a visual indication when the line voltage is being tested.  
     
     
         20 . A circuit for protecting an electrical device, said circuit configured to: 
 monitor a line voltage to detect a high voltage condition such that the voltage is above a predetermined voltage range;    monitor the line voltage to detect a low voltage condition such that the voltage is below the predetermined range;    electrically isolate the electrical device such that the electrical device does not receive electricity when at least one of a high voltage condition and a low voltage condition is detected;    monitor the line voltage after electrically isolating the electrical device to detect a voltage within the predetermined range;    restore power to the electrical device when the line voltage is detected to be within the predetermined voltage range;    provide a visual indication when a low voltage condition is detected;    provide a visual indication when a high voltage condition is detected; and    provide a visual indication when the line voltage is being tested.